/*
 * Copyright (c) 1993-2022, NVIDIA CORPORATION. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef TENSORRT_ARGS_PARSER_H
#define TENSORRT_ARGS_PARSER_H

#include <string>
#include <vector>
#ifdef _MSC_VER
#include ".\windows\getopt.h"
#else
#include <getopt.h>
#endif
#include <iostream>

namespace samplesCommon {

//!
//! \brief The SampleParams structure groups the basic parameters required by
//!        all sample networks.
//!
struct SampleParams {
  int32_t batchSize{1};  //!< Number of inputs in a batch
  int32_t dlaCore{-1};   //!< Specify the DLA core to run network on.
  bool int8{false};      //!< Allow runnning the network in Int8 mode.
  bool fp16{false};      //!< Allow running the network in FP16 mode.
  std::vector<std::string>
      dataDirs;  //!< Directory paths where sample data files are stored
  std::vector<std::string> inputTensorNames;
  std::vector<std::string> outputTensorNames;
};

//!
//! \brief The CaffeSampleParams structure groups the additional parameters
//! required by
//!         networks that use caffe
//!
struct CaffeSampleParams : public SampleParams {
  std::string
      prototxtFileName;  //!< Filename of prototxt design file of a network
  std::string
      weightsFileName;       //!< Filename of trained weights file of a network
  std::string meanFileName;  //!< Filename of mean file of a network
};

//!
//! \brief The OnnxSampleParams structure groups the additional parameters
//! required by
//!         networks that use ONNX
//!
struct OnnxSampleParams : public SampleParams {
  std::string onnxFileName;  //!< Filename of ONNX file of a network
};

//!
//! \brief The UffSampleParams structure groups the additional parameters
//! required by
//!         networks that use Uff
//!
struct UffSampleParams : public SampleParams {
  std::string uffFileName;  //!< Filename of uff file of a network
};

//!
//! /brief Struct to maintain command-line arguments.
//!
struct Args {
  bool runInInt8{false};
  bool runInFp16{false};
  bool help{false};
  int32_t useDLACore{-1};
  int32_t batch{1};
  std::vector<std::string> dataDirs;
  std::string saveEngine;
  std::string loadEngine;
  bool useILoop{false};
};

//!
//! \brief Populates the Args struct with the provided command-line parameters.
//!
//! \throw invalid_argument if any of the arguments are not valid
//!
//! \return boolean If return value is true, execution can continue, otherwise
//! program should exit
//!
inline bool parseArgs(Args& args, int32_t argc, char* argv[]) {
  while (1) {
    int32_t arg;
    static struct option long_options[] = {
        {"help", no_argument, 0, 'h'},
        {"datadir", required_argument, 0, 'd'},
        {"int8", no_argument, 0, 'i'},
        {"fp16", no_argument, 0, 'f'},
        {"useILoop", no_argument, 0, 'l'},
        {"saveEngine", required_argument, 0, 's'},
        {"loadEngine", no_argument, 0, 'o'},
        {"useDLACore", required_argument, 0, 'u'},
        {"batch", required_argument, 0, 'b'},
        {nullptr, 0, nullptr, 0}};
    int32_t option_index = 0;
    arg = getopt_long(argc, argv, "hd:iu", long_options, &option_index);
    if (arg == -1) {
      break;
    }

    switch (arg) {
      case 'h':
        args.help = true;
        return true;
      case 'd':
        if (optarg) {
          args.dataDirs.push_back(optarg);
        } else {
          std::cerr << "ERROR: --datadir requires option argument" << std::endl;
          return false;
        }
        break;
      case 's':
        if (optarg) {
          args.saveEngine = optarg;
        }
        break;
      case 'o':
        if (optarg) {
          args.loadEngine = optarg;
        }
        break;
      case 'i':
        args.runInInt8 = true;
        break;
      case 'f':
        args.runInFp16 = true;
        break;
      case 'l':
        args.useILoop = true;
        break;
      case 'u':
        if (optarg) {
          args.useDLACore = std::stoi(optarg);
        }
        break;
      case 'b':
        if (optarg) {
          args.batch = std::stoi(optarg);
        }
        break;
      default:
        return false;
    }
  }
  return true;
}

}  // namespace samplesCommon

#endif  // TENSORRT_ARGS_PARSER_H
